CVE-2021-46932 (GCVE-0-2021-46932)
Vulnerability from cvelistv5 – Published: 2024-02-27 09:44 – Updated: 2026-05-11 13:44
VLAI
EPSS
VEX
Title
Input: appletouch - initialize work before device registration
Summary
In the Linux kernel, the following vulnerability has been resolved:
Input: appletouch - initialize work before device registration
Syzbot has reported warning in __flush_work(). This warning is caused by
work->func == NULL, which means missing work initialization.
This may happen, since input_dev->close() calls
cancel_work_sync(&dev->work), but dev->work initalization happens _after_
input_register_device() call.
So this patch moves dev->work initialization before registering input
device
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-27 16:12 UTC
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
5a6eb676d3bc4d7a6feab200a92437b62ad298da , < d2cb2bf39a6d17ef4bdc0e59c1a35cf5751ad8f4
(git)
Affected: 5a6eb676d3bc4d7a6feab200a92437b62ad298da , < d1962f263a176f493400b8f91bfbf2bfedce951e (git) Affected: 5a6eb676d3bc4d7a6feab200a92437b62ad298da , < 292d2ac61fb0d9276a0f7b7ce4f50426f2a1c99f (git) Affected: 5a6eb676d3bc4d7a6feab200a92437b62ad298da , < a02e1404e27855089d2b0a0acc4652c2ce65fe46 (git) Affected: 5a6eb676d3bc4d7a6feab200a92437b62ad298da , < 975774ea7528b489930b76a77ffc4d5379b95ff2 (git) Affected: 5a6eb676d3bc4d7a6feab200a92437b62ad298da , < 9f329d0d6c91142cf0ad08d23c72dd195db2633c (git) Affected: 5a6eb676d3bc4d7a6feab200a92437b62ad298da , < e79ff8c68acb1eddf709d3ac84716868f2a91012 (git) Affected: 5a6eb676d3bc4d7a6feab200a92437b62ad298da , < 9f3ccdc3f6ef10084ceb3a47df0961bec6196fd0 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.23
Unaffected: 0 , < 2.6.23 (semver) Unaffected: 4.4.298 , ≤ 4.4.* (semver) Unaffected: 4.9.296 , ≤ 4.9.* (semver) Unaffected: 4.14.261 , ≤ 4.14.* (semver) Unaffected: 4.19.224 , ≤ 4.19.* (semver) Unaffected: 5.4.170 , ≤ 5.4.* (semver) Unaffected: 5.10.90 , ≤ 5.10.* (semver) Unaffected: 5.15.13 , ≤ 5.15.* (semver) Unaffected: 5.16 , ≤ * (original_commit_for_fix) |
guessed |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: appletouch - initialize work before device registration\n\nSyzbot has reported warning in __flush_work(). This warning is caused by\nwork-\u003efunc == NULL, which means missing work initialization.\n\nThis may happen, since input_dev-\u003eclose() calls\ncancel_work_sync(\u0026dev-\u003ework), but dev-\u003ework initalization happens _after_\ninput_register_device() call.\n\nSo this patch moves dev-\u003ework initialization before registering input\ndevice"
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T13:44:41.401Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/d2cb2bf39a6d17ef4bdc0e59c1a35cf5751ad8f4"
},
{
"url": "https://git.kernel.org/stable/c/d1962f263a176f493400b8f91bfbf2bfedce951e"
},
{
"url": "https://git.kernel.org/stable/c/292d2ac61fb0d9276a0f7b7ce4f50426f2a1c99f"
},
{
"url": "https://git.kernel.org/stable/c/a02e1404e27855089d2b0a0acc4652c2ce65fe46"
},
{
"url": "https://git.kernel.org/stable/c/975774ea7528b489930b76a77ffc4d5379b95ff2"
},
{
"url": "https://git.kernel.org/stable/c/9f329d0d6c91142cf0ad08d23c72dd195db2633c"
},
{
"url": "https://git.kernel.org/stable/c/e79ff8c68acb1eddf709d3ac84716868f2a91012"
},
{
"url": "https://git.kernel.org/stable/c/9f3ccdc3f6ef10084ceb3a47df0961bec6196fd0"
}
],
"title": "Input: appletouch - initialize work before device registration",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2021-46932",
"datePublished": "2024-02-27T09:44:00.108Z",
"dateReserved": "2024-02-25T13:45:52.720Z",
"dateUpdated": "2026-05-11T13:44:41.401Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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